The presence or absence of clouds can have an important impact on heat transfer...有无云层对热量的传递会产生重要的影响。She did not mention her mother's absence...她并没有说起她母亲不在场的事。Her absence is due to illness.她因病缺席。A demodulator decode...
After a three-weekend courtship, Pamela accepted Randolph's proposal of marriage.经过3个周末的追求之后，帕梅拉接受了伦道夫的求婚。Randolph's work was exclusively concerned with the effects of pollution on health.伦道夫的著作专门论述污染对健康的影响。She...